To configure a 7250 SROS Network Ingress policy

Purpose

A 7250 SROS Network Ingress policy defines forwarding for ingress traffic on a network interface.

The policy associates ingress Dot1p, DSCP, or LSP-EXP bits with forwarding classes and profiles, using an assigned 7250 SROS Ingress Classification policy.

The 7250 SROS Network Ingress policy also defines network ingress policers. Eight unicast policers, with IDs 1 to 8, exist by default and cannot be deleted. The CIR, PIR, and burst size values for these policers are user-configurable; if no user-configured values are defined, default values are used. You can configure up to eight additional policers for multicast, using IDs 9 to 16.

Ingress policers are mapped to FCs. The default mapping for unicast policers 1 to 8 is fixed, and not user-configurable. The mapping of FCs to multicast policers is user-configurable.

7250 SROS Network Ingress policies are assigned to L3 network interfaces; see To create an L3 network interface on a routing instance and To configure L3 network interfaces.

7250 SROS Network Ingress policies are identified by the policy name; policy ID numbers are not used.

A default 7250 SROS Network Ingress policy is applied if no user-configured policy is explicitly assigned. The default policy cannot be modified or deleted.

For more information about QoS policy support on the 7250 IXR, see 7250 IXR QoS policies.

Steps
 
1 

Choose Policies→QoS→SROS QoS→Network→7250 SROS Network Ingress from the NFM-P main menu. The 7250 SROS Network Ingress form opens.

2 

Click Create, or choose a policy and click Properties. The 7250 SROS Network Ingress Policy (Create|Edit) form opens.

3 

Configure the required parameters on the General tab.

4 

In the Ingress Classification Policy panel, select a 7250 SROS Ingress Classification policy; see To configure a 7250 SROS Ingress Classification policy.

5 

Configure policers.

Policers 1 through 8 exist in the policy by default. Unicast traffic uses policers 1 to 8.

You can create additional policers 9 through 16. These additional policers can be mapped to FCs for multicast traffic only.

Click on the Policer tab and perform the following:

  1. Choose a policer from the list and click Properties, or click Create. The Policer, 7250 SROS Network Ingress (Create|Edit) form opens.

  2. Configure the required parameters on the General tab.

  3. Click on the CIR/PIR and Burst Size tabs and configure the required parameters.

  4. Save your changes and close the form.

6 

To view the mapping of policers to forwarding classes, click on the Forwarding Classes tab.

The mapping of FCs to unicast policers 1 through 8 is fixed, and is not user-configurable.

The mapping of FCs to multicast policers is optional; see Step 7.

7 

To configure the mapping of multicast policers to forwarding classes, click on the Forwarding Classes tab. For each required FC, perform the following:

  1. Choose the forwarding class from the list and click Properties. The Network Ingress Forwarding Class (Create) form opens.

  2. Configure the Multicast Policer ID parameter.

    You can enter a policer ID from 1 to 16. You can assign one of the policers that exist in the policy by default (1 to 8), or a user-created policer (9 to 16).

  3. Save your changes and close the form.

8 

Click OK to save the policy and close the form, or click Apply to save the policy. See To release and distribute a policy to distribute the policy to NEs.

End of steps